Comment 2 for bug 117222

Thanks for reporting the problem. This is a known issue, and fixes are already in the works. Marking this a dupe.

For a preview, if you wish to assist with testing, please `sudo apt-get install displayconfig-gtk` and run `sudo displayconfig-gtk`.

Alternately, if you wish to test the new automatic resolution detection, move your /etc/X11/xorg.conf aside and restart X, and see if it detects the correct resolution.

Both of these solutions are still developmental and work for only a small proportion of cases, which is why they're not rolled out generally, however your testing feedback on them would be useful to have. You're right that this is a high-priority issue we hope to resolve for gutsy.